The Most Important Chemical Regulator of Respiration Is

Question

The most important chemical regulator of respiration is
A) oxygen.
B) carbon dioxide.
C) bicarbonate ion.
D) sodium ion.
E) hemoglobin.

Accepted Answer

Carbon dioxide is the most important chemical regulator of respiration. It is responsible for controlling the rate and depth of breathing to maintain proper levels of CO2 and pH in the body. When CO2 levels increase, the body increases respiration to eliminate excess CO2.